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STATEWIDE SANITARY SEWER SYSTEMS GENERAL ORDER <br />3.2.5. Proactive Sanitary Sewer System Management to Reduce Inflow and Infiltration <br />Excessive inflow (stormwater entering) and infiltration (groundwater seepage entering) <br />to sanitary sewer systems is preventable through proactive sewer system management <br />using the best practices and technologies available. The efficiency of the downstream <br />wastewater treatment processes is dependent on the performance of the sanitary sewer <br />system. When the structural integrity of a sanitary sewer system deteriorates, high <br />volumes of inflow and infiltration can enter the sewer system. High levels of inflow and <br />infiltration increase the hydraulic load on the downstream treatment plant, which can <br />reduce treatment efficiency, lead to bypassing a portion of the treatment process, cause <br />illegal discharge of partially treated effluent, or in extreme situations make biological <br />treatment facilities inoperable (e.g., wash out the biological organisms that treat the <br />waste). <br />3.3. Water Quality Control Plans, Policies and Resolutions <br />The nine Regional Water Boards have adopted region -specific water quality control <br />plans (commonly referred to as Basin Plans) that designate beneficial uses, establish <br />water quality objectives, and contain implementation programs and policies to achieve <br />those objectives. The State Water Board has adopted statewide water quality control <br />plans, policies and resolutions establishing statewide water quality objectives, <br />implementation programs and initiatives. <br />3.3.1. State Water Board Antidegradation Policy <br />On October 28, 1968, the State Water Board adopted Resolution 68-16, titled <br />Statement of Policy with Respect to Maintaining High Quality of Waters in California, <br />which incorporates the federal antidegradation policy. Resolution 68-16 requires that <br />existing water quality be maintained unless degradation is justified based on specific <br />findings. <br />The continued prohibition of sewage discharges from sanitary sewer systems into <br />waters of the State aligns with Resolution 68-16. A sewage discharge from sanitary <br />sewers to waters of the State is prohibited by this Order. Therefore, this Order does not <br />allow degradation of waters of the State. In addition, this Order: (1) further expands the <br />existing prohibition of sewage discharges to include waters of the State, in addition to <br />waters of the United States as provided in previous Order 2006-0003-DWQ, and <br />(2) enhances the ability for Water Board enforcement of violations of the established <br />prohibitions. <br />3.3.2. State Water Board Sources of Drinking Water Policy <br />On May 19,1988, the State Water Board adopted Resolution 88-63 (amended on <br />February 1, 2006), titled Sources of Drinking Water, establishing state policy that all <br />waters of the State, with certain exceptions, are suitable or potentially suitable for <br />municipal or domestic supply. <br />3.3.3. State Water Board Cost of Compliance Resolution <br />On September 24, 2013, the State Water Board adopted Resolution 2013-0029, titled <br />Directing Actions in Response to Efforts by Stakeholders on Reducing Costs of <br />ORDER 2022-0103-DWQ <br />December 6, 2022 <br />14 <br />